| 摘要 |
Multi-face advertising board has five faces and it comprises two regular triangular driver units which are connected to each other by a chain which makes two units rotating in the same direction. This apprts. comprises plates(12) composing a face, a motor(3), a clutch(4), a break device(5), five-face units and chains which are arranged in alternastion in order to narrow the gap between 5-face units.
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